Saw-frame.



No. 648,704. iatented ma I, mm

M. OAKLAND.

SAW FRAME. (Application flld Sept 14,11899.) (No Modal.)

IMAPLTIN sAw-FRAM E'.

SPECIFICATION forming part 6r Letters Patent no. 648,704; dated I Application filed September 14, 1899. Serial No. 730,422. (No in el.)

an improved means for holding the blade of "a bracket or other similar saw at any, desiredangle of inclination to theframe, adapting I the saw particularly to the sawing of curves outer extremity of the frame-body.

and circles.

In the accompanying drawings, Figure l is a side elevation of this improved saw-frame. Fig. 2 is an enlarged fragmentary view of the Fig. 3 is a central vertical section through the outer 'end oftheframe body,showing the tighten-- ing and the holding means" for the saw-blade.

- Fig. 4 is a central vertical section of the inner end of the frame-body, also showing the means for holding the inner end of the saw blade. Fig. 5 is a fragmentary view showing in dotted lines two of the various positions assumed by the saw-frame relative to the blade. Fig. 6 is a transverse vertical section on dotted line 00 a: of Fig. 3. Fig. 7 is a face view of the locking-spring for holding the blade from turning in the frame. Fig. Sis an end view of the notched collar formed rigid with the saw-handle.

Like letters of reference indicate corresponding throughout the several views.

A is the saw-handle. A is a notched lock.- in g-collar fixed rigidly thereto, and A a stem also fixed in the handle A, which stem provides the means of attachment for the inner end of the saw-blade. B is a similar stem adapted to receive "the opposite end of the saw-blade. Both of the stems A and B lie in suitable openings in the outer end of the frame-body. One end of the stem 13 is screwthreaded and is provided with a groove or key-seat B.

B is a collaradapted to slide freelyupon the stem B, its forward end being radially notched, as shown in Fig. 6, and its outer surface milled or roughened. Itis provided with a pin 13 for engaging the key-seat B. x g

B is a milled nut screw-threaded to cor- UNrrE STATES PATENT: OrricE OAKLAND, or CHICAGO, ItL' ig oisi;

respond with the screw-threads upon the stem B. g

C is the frame-body, provided with the sleeve ends 0 and C for receiving the stem Ai'of the handle A and the stem ]3, respec-' tively. C is alocking-spring having two inwardly-- extending lugs C for engagfing' the radial notches on the collar A. .This locking-spring is rigidly secured at one of its ends to the frame-body C. G is a like locking-spring for engaging the radial notches on the inner end of the collar 13*. I D is the saw-blade, provided with any suit1 able means of attachment to the stems A and B. stems with the recesses D, extending inward from one side of said stems and having the narrow throat I)- for receiving the saw-blade D, thee'nlarged ends of said blade lying within said recesses D.

In use the saw-blade D is inserted in position in the saw-frame and suitable tension given to it by turning the milled nut 13 on the SCIQWr'blllGfldSOf the stem B. lVhen it is desirable to change the angle of the blade,

the locking'springs C and G are first pressed inward, releasing the stems A and B, so that they and the saw-blade D may be turned at any desired angle with the frame. The springs are released, and their lugs 0 engaging the In this instance I have provided said radial'notches on the collar A and the stem.

B,-hold the saw-blade in the newly-assumed position,

In sawing circles or various curves the angle ofincl ination of the blade with the sawframe may be changed at pleasure.

I claim as my invention- 1. In a saw-frame, in combination, a framebody; two saw-holding stems rotatably mounted in the frame-body; a notched locking-collar for each stem; and a flat spring secured at one of its. ends to each end of the sawframe, a portion of each of said springs being in ring form, adapted to surround saidlocking-collars, and having an inwardly-extending projection for engaging the notches of said collars, the lower ends of said springs projecting downward to a point below the saw-frame.

2. In a saw-frame, in combination, a framethe other of said stems being provided with a screw-thread and a longitndinal groove; a

notched locking-collar mounted on said last- 15 mentioned stem, and having a ing for engging said groove; a spring secured to each end of the frame-body, for engaging said notched locking-collars; and a nut on the thread of said inst-mentioned stein, adapted to tighten 20 the saw-blade. I

' MARTIN OAKLAND.

( \Vitnesses: I

L. L.- IVHLLER,v .GEO. L. CHINDAHL. 

